Wireless Audio Module Design

We need a low-latency wireless audio system that we can integrate into existing products, but to start with it will be a stand-alone product (plug-in transceivers). You would be designing this product - to include PCB, housing, and firmware. We can take care of other things like the mounting pieces, case, etc if needed. Our current engineers are too busy with other projects, we could really use some help with this wireless audio system!

The application of this system is to connect a metal detector to a set of wireless headphones. Low-latency (under 40ms) is key, as are durability, ease of use, and as always, cost. This is our first time using freelancer.com, but we look forward to forming long-lasting relationships with the people we work with.

There are 2 existing products that are close to meeting our needs:

[url removed, login to view]

[url removed, login to view]

Project requirements follow.

Product (1 unit) includes:

2x transceivers (PCB with housing)

2x 6” micro usb cables for charging

1x international usb charger (with 2 usb ports)

3x GoPro mount screws

1x GoPro rod mount

2x GoPro snap-on adapters

1x 12” 1/4” right angle to 1/4” right angle cable

1x zipper carry case

1x product package with barcode

Project requirements:

Our company owns all rights to design

All documentation in English

Schematics/PCB in Altium format

Bill of materials with approved vendor list

Mechanical drawings (pdf and AutoCAD)


Dimensions- 2”x2”x1”ish

1/4 inch and 1/8 inch (Apple standard 4-pin with microphone) headphone jacks (if not possible can leave out 1/8" jack)

Selectable transmit/receive via recessed dip switch

Micro USB port for charging

Spring clip for belt mounting

Detachable GoPro mount for rod mounting

Dust covers for all connections and dip switch

IP64 rated

Radius corners on box

Logo on button

LED status lights

We can assist in product design

Carry case to be hold all items securely


Stereo operation

Less than 40ms system latency (LL aptX?)

Rechargeable battery

20+ hrs battery life

Easy pairing on startup (less than 3 seconds)

LED status light for power, pairing, low battery

Frequency agile to limit interference

One-button operation for power on/off, pairing

15-30ft range, line-of-sight

Easily used for integration inside metal detectors as stand-alone module (via USB pinout)


Less than $40/unit to manufacture, including all of the above


Product must be pass all compliance testing (FCC/CE/ROHS) for international sales.

Product must be pass all compliance testing (FCC/CE/ROHS) for international sales.

Habilidades: Bluetooth de baja energía, Electrónica, Ingeniería, Diseño PCB, Inalámbrico

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Información del empleador:
( 0 comentarios ) United States

Nº del proyecto: #14908372

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